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Reply To Topic Topic: Helicopter EMS Issues
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Posted By Wally Hawn on 24 Apr 2009 08:21 AM
Bells and whistles won't make the difference in helicopter EMS safety, with one big exception- NVGs. The scenario common to the highest hazard is night duty, a situation I've seen since Vietnam. It doesn't seem to make much difference whether the aircraft involved is a single or a twin; IFR/VFR capable. The common element in tis scenario is a human pilot making poor decisions and not resolving the issue. You don't resolve poor decisions with equipment. I think equipment adds to the problem by promoting the illusion of capability and increasing work load in a situation where the pilot's already over taxed.
I'm afraid I see some real problems with formal risk assessment and operational control programs as well. Very few professional pilots are unaware that the cost of an error in this business is often a fatal accident, knowing that should make safe conservative responses, that is- aborts and declines the result in the accident scenarios. Add that a major part of our risk assessment is interpreting very, very fine points that can't be predicted, much less placed in a matrix, making them a very blunt instrument when direct finesse is required for credible decisions. Operational control centers share that non-specificity, plus the committee weaknesses of diluting responsibility and a decision by passion of presentation.
Human/pilot error is the problem, and the industry has yet to address it it in any meaningful way. Quite the reverse, the industry seems to promote the problem by ignoring known physiological factors affecting mental functioning when scheduling pilot duty. We commonly schedule for long duty days, too many consecutive long duty days, and rotate to nights continuing that error, often with only a 24 hour break between day and night duty assignments.
Twelve hour duty days may be acceptable in low work-load situations, but you can't predict those days in this industry. Yet, it's the standard and traditional, because we've always done it that way. A pilot suffering from fatigue after a 12 hour duty has an unwritten if not formal demand to continue, a 'real pilot can hack it'. Add the fact that 12 hour duty days are not infrequently 14 hour plus duty days, and we're expected to recover in the regulatory minimum 10 hours...
Seven sequential 12 hour days is one too many. The only evidence I have to support this is from the Railroad industry.
Sleep loss, sleep disruption and circadian upset are well known factors. The industry ignores those when scheduling pilot night duty. It magnifies the error by making the normal night rotation day to night with a 24-hour break at the end of a seven day duty schedule and not training management if not line pilots in assessing the issue.
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RE: Helicopter EMS Issues
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